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Updated: Jun 4, 2026

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Animal Models of Depression - Chronic Despair Model (CDM)
Published on: September 23, 2021
Galanin, galanin receptor subtypes and depression-like behaviour
Eugenia Kuteeva1, Tomas Hökfelt, Tara Wardi
1Department of Neuroscience, Karolinska Institutet, Retzius väg. 8, 171 77 Stockholm, Sweden.
Experientia Supplementum (2012)
|February 9, 2011
Summary
Galanin, a neuropeptide, influences neurotransmission implicated in depression. Targeting specific galanin receptors (GalR1, GalR2, GalR3) may lead to novel antidepressant drugs with improved efficacy and fewer side effects.
Area of Science:
- Neuroscience
- Pharmacology
Background:
- Depression pathophysiology involves unclear monoaminergic transmission disturbances.
- Current antidepressants have limited efficacy and side effects.
- Neuropeptides like galanin are increasingly relevant in mood disorders.
Purpose of the Study:
- To investigate the role of galanin and its receptor subtypes in depression.
- To explore galanin receptor subtypes as potential antidepressant drug targets.
Main Methods:
- Review of pharmacological and genetic studies on galanin in depression-like behavior in rodents.
- Analysis of galanin's co-expression and modulation of noradrenaline and serotonin transmission.
Main Results:
- Galanin modulates noradrenaline and serotonin transmission, both implicated in depression.
- Stimulation of Galanin Receptor 1 (GalR1) and/or Galanin Receptor 3 (GalR3) leads to depression-like phenotypes.
- Activation of Galanin Receptor 2 (GalR2) reduces depression-like behavior in rats.
Conclusions:
- Galanin receptor subtypes play a significant role in depression-like behaviors.
- Galanin receptor subtypes represent promising novel targets for antidepressant drug development.
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